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Dump dmesg if container rootfs blocks or fails mount #7260

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Merged
hickeng merged 2 commits into from
Feb 9, 2018
Merged

Dump dmesg if container rootfs blocks or fails mount #7260

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c0c2204
Dump dmesg if container rootfs blocks or fails mount
hickeng Feb 5, 2018
c356404
Merge branch 'master' into 6379
hickeng Feb 9, 2018
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9 changes: 8 additions & 1 deletion isos/bootstrap/bootstrap
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,9 @@ mkdir -p /mnt/containerfs

echo "Waiting for rootfs"
while [ ! -e /dev/disk/by-label/containerfs ]; do sleep 0.1;done
if mount -t ext4 /dev/disk/by-label/containerfs ${MOUNTPOINT}; then
# https://github.com/vmware/vic/issues/6379
# grab dmesg output and dump to debug log if mount doesn't occur in a useful timeframe (2min)
if timeout --signal=KILL 2m mount -t ext4 /dev/disk/by-label/containerfs ${MOUNTPOINT}; then
# ensure mountpoint exists
mkdir -p ${MOUNTPOINT}/.tether

Expand Down Expand Up @@ -105,6 +107,11 @@ else
# TODO: what do we do here? we really need to somehow report an error
# fail hard
echo "Unable to chroot into container filesystem"

# dump dmesg data in case there's a system problem injecting or loading the root filesystem
dmesg
# because dmesg is long and will wrap over console
echo "dmesg dump due to root filesystem mount failure"
fi

# Shut the system down
Expand Down